Cixin Liu's The Three-Body Problem begins with a top secret Chinese project just after the Cultural Revolution in the 1960s and on into the future, Earth tries to (and perhaps does) make contact with the civilizations of Trisolaris, a planet several light years away. Trisolaris, dominated by three suns, has eons of stable, then chaotic seasons in which culture flourishes then crashes with disastrous results. Inhabitants dehydrate their bodies to survive. Scientific efforts to predict gravitational motion in a three body system have perplexed physicists on Trisolaris (and Earth) for ages. Only a few on Earth know of these extra-terrestrial efforts begun by the Chinese and later appearing in strange video games.
If the Trisolarians migrate to our solar system to escape the certain destruction of their planet, should Earth welcome them as superior beings or fight an invading enemy?
Check back in a few weeks to check out my review of the second book in the series: The Dark Forest.